NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 29 of 17782
Recent results on the mass, gravitational field and moments of inertia of the moon.
Author and Affiliation:
Michael, W. H., Jr.
Blackshear, W. T.(NASA Langley Research Center, Hampton, Va., United States)
Abstract: Use of Doppler tracking data from the Lunar Orbiter series of spacecraft in an analysis of the spherical harmonic coefficients of the lunar gravitational field through thirteenth degree and order. The value obtained for the mass of the moon, GM = 4902.84 cu km/sec/sec, is in good agreement with previous results and with results obtained by alternate procedures. Acceleration contour plots, derived from the gravitational coefficients, show correlations with surface features on the near side of the moon, but are of questionable validity for the far side because of the lack of direct tracking data on the far side. Based on the most recent gravitational field data, the current estimate for the polar moment of inertia of the moon is C/Ma squared = 0.4019 super + 0.004 sub - 0.002. This value indicates that the interior of the moon can be homogeneous, but some results presented strongly suggest that the moon is differentiated, with an excess of mass in the direction toward the earth.
Publication Date: Mar 01, 1972
Document ID:
19720045323
(Acquired Dec 04, 1995)
Accession Number: 72A28989
Subject Category: SPACE SCIENCES
Document Type: Journal Article
Publisher Information: Netherlands
Financial Sponsor: NASA; United States
Description: 15p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: LUNAR GRAVITATION; LUNAR ORBITER; MOMENTS OF INERTIA; PLANETARY MASS; CONFERENCES; DOPPLER EFFECT; GRAVITATIONAL FIELDS; LUNAR FAR SIDE; SATELLITE OBSERVATION; SPACECRAFT TRACKING; SPHERICAL HARMONICS
Imprint And Other Notes: (NATO Advanced Study Institute on Lunar Studies, Patras, Greece, Sept. 1971.) The Moon, vol. 3, Mar. 1972, p. 388-402.
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 12, 2011
Contact Us